Internal-combustion engine



m ,QT N w A. C. KENVVORTHY. INTERNAL COMBUSTION ENGINE. ORIGINALFILED Nov. la. 1919.

Jan., 9, 1923..

Jan., 9, 1923.

A. c. KENWORTHY, LMLM INTERNAL COMBUSTION ENGINE.

ORIGINALFILED N0v.13.1919.

. INVENTOR mf E @www BY Nw Jv ATTORNEY lait tl,

` ltlatented .application tiled Itlcvcm'her 1E, 1919, serial lilo. 337,752.

To all whom it may concern Be it known that l, ALVIN C. l'lnnworcrrrv, a citizen ot the llnited tltatea residing at Walla Walla, in the county of lrlalla Walla and State ci llfashiiigtoin have invented certain new and useful lrnproveinents in liiternalCombustion Engines, oi which the following is a speciiication.

'll'his invention relates to improvements `in internal cornbustion engines ot the two cycle type and has tor its object to provide improvements ojt this character in which one.j two or three connecting,- rods may be used as required.

il further object is to provide an engine of this class which may be simply and etlioiently cooled, either' by air or water or other inediurns.

l further object is to provide an engine relatively `free ot valves.

y l further object is to provide an engine having1 a minimum ot vibration.

With these and other objects in view the invention consists in certain novel features ot' construction and combinations and arrangement oit parts, as will be incre itully hereinafter described, and that the invention may be better understood reterence is had to "the accompanying1 drawings, in which liig. l is a plan View ot the internal cornbustion engine with part broken away;

lliig. 2 is a sectional elevation thereot;

Fig. 3 is a partial plan view showinga my preferred forni ot crank;

Il is a partial sectional elevation showing; my preferred torni ot exhaust outlet and l5 is a cross section through 5 lin. l,

'.lo give a clear understanding ot the invention let it be understood that this engine is ot the two-cycle type and that the principalis equally applicable to a two end cylinder engine as shown in the drawings or to a single end cylinder engine, tor the two end cylinder engine is inerely a double single end cylinder engine, and in these speciiications a single end cylinder only will be ci:- plained.

lin the drawings like numerals refer to like parts throughout and 'l represents 'the engine trarne which consists et the usual bed plat-e and supports which hold the stations ary pistons 2. The stationary piston is ported 53, either as shown in lille'. et wherein the intake port only occurs7 or as sl'lown in 5 otl ttl ltenewed .lilly 19, i922. Serial lilo.

traire.

wherein occurs both the intake port 3 and the exhaust port Ll; the intake port communicates with the carburetor and is provided with a valve 5 to prevent a return pressure reaching the carburetor (not shown). A second` port G connects with the port t in the cylinder 8 and is oiiset to present the outlet ori'lice 9 out ot register with the port t5 the cylinder passes stationary piston. n

l/l here the exhaust port occurs in the stationary piston, as shown in lilig. 2, and as above inentionech it is designed to register with the exhaust port 10 of the cylindei'-, and is placed slightly in advance of the intake port as shown.

At diametrically opposite points in the stationary piston are slots ll extending longitudinally thereof to provide a passage through which a connection may' he :made between the plunger 12 and the 'cylinder 8. The head `13 of the piston is` solid and is provided with a detlectine' iin let to cuide the explosive gras toward the forward end of the cylinder thus to more efficiently purge the cylinder ot the burnt gases. l

rlhe cylinder 8 consists of a head 15 and the above mentioned intalre port 'i' and the exhaust port 'l0 and (see Fig. 4t) the exhaust port works over the orifice 16 and terms a cut ott valve therewith. 'llhe cylinder is provided with the usual spark plugs 17 which connect electrically with the tern'iinals 18 which are adjustably mounted on the rod i9; and beine adjustable the spark may readily be advanced or retarded as desired to suit the best running);l conditions.

over the lNithin the stationary piston Q is the l above inentioned plunger l2 which is .siinilar to the usual internal combustion engine piston with the wrist pin 20 however positioned at the open end ot the plunger to register with the said slots at the lower end oit' the plunger travel.

'lhe wrist pin extends laterally through the slots l1 and into the cylinder unitine; cooperatively the plunger and the cylinder with, the stationary piston positioned between the plunger and the cylinder with no slidable contact between the two.

llhe wrist pin niay be extended to receive connecting rods 2l which with the connectino rod 22 will require a three throw cranlr shaft 23` it is now obvious that either one connecting rod 22 may he employed or two connecting; rods N or three connectino rods 2l and 22 may be used depending, upon the class et engine and the work required. My preferred form however is the centrally disposed connecting rod Q2 as in this position the rod and crank shait may readily be enclosed.

Radiating; vanes 24E may be used tor cooling` purposes or a water jacket not shown may surround the movable cylinder and attached to the stationary piston or the nprights of the engine traine.

The usual rings are provided on the stationary piston and the plunger.

In operation the gas is drawn into the stationary piston through the port 3 by the movement ot the reciprocating plunger l2 toward the open end. 0n the return ol the plunger the valve 5 closes and the gras is compressed within the stationarjyf cylinder until the port 7 registers with the port 6 at which time the compressed gras through these ports and striking' against the detlecter la is turned in its path toward the end oit the cylinder which iilling` forces the burned gases out at the exhaust ports 10 and 16 (or i as the case may be), the port l0 being` advanced to give periectpurging to the cylinder. rlhecylindei' is now filled with and on the .return stroke, making one complete revolution, the gas is coinpressed `while the plunger is drawing in its second charge. ll/vith the `gas compressed the sparlr plug closes contact with the terminals and the resultant spart: ignites the compressed when the cylinder is forced away froin the stationary piston.

I thus provide an explosion at each revolution ot the Crank shaft; I also have a inaxiinuin oit power during the compression stroke overcoming the compression ot the plunger; and compressing the gas in the cylinderu and *drawing in the explosive charge, on the return stroke; thus providing an engine ot' great eliieiency.

lWith the design as shown in Figs. and f respectively it will be. noted that with the one double ended cylinder l provide an engine equhfalent to a tour cylinder, tourcycle type engine, and also, 'lf'roin the very nature of its construction, reduce the vibration to the minimum.

Having thus described my invention, I claim:-

l. In an internal combustion engine, the combination or a ported, slotted, stationary piston, a cylinder on said stationary piston, a plunger within said stationary piston, connecting rod, and a means 'for cooperatingly uniting the said plunger and the said cylinder through said slot, with the said connectingl rod rotatably mounted'on said means.

2. ln an internal combustion engine, a traine, a slotted stationary piston a-... riched to said trame, a cylinder mounted on said rushes stationary piston.y a plunger, a means for cooperatinrly joiningthe said cylinder and the said plunger through the .slot iu said pistou, and a cinineetiii;v rod joiningr said means with the eranl shalt ol' said engine.

ln an internal combustion engine, ay traine, a stationary piston attached to said :traine and provided with diametrally oppos'te slots, a ported cylinder mounted on said stationary piston, a plunger movable, cooperatively with said cyliinler and out ofi slidable contact therewith, and a wrist pin cooperatively eonnectiucr the said cylinder and the said plunger through said slots and designed to rotatably mount a connection' rod` ln an internal combustion engine, a trame, a stationary pistou attached to said tramo and provided with diametrally opposite slots extending lonfifitudinally thereot, a ported cylinder mounted and reciproeally operable on said stationary piston, a plunger mounted and reciprocally operable within said stationary piston, a wrist pin cooperatively connecting the said eylinder and the said plunger through said slots and designed to rotatably mount a, connecting' rod.

5. ln an internal con'ihustion engine, a trame, a ported hollow stationary piston rigidly attached to said trame, said pistou being` provided with diametrally opposite slots extending longitudinally thereof, a ported cylinder mounted and reeiprocally operable on said stationary piston, a plunger mounted and reeiprmally operable within said hollow stationary piston and Inovablc cooperatively with said cylinder and out ot slidal'ile Contact therewith. a means it'or coopcratinnly connectingsaid plunger and said cylinder through. said slots, and a connecting rod rotatahhT mounted on said means.

6. ln an internal combustion engine, a` trame, a ported hollow stationary piston rigidly attached to said trame` said piston heine' provided with slots, in the sides therool, and having` a deflectionr plate on the, inner end thereof, a cylinder operahly mounted on said piston and having anr intake port and an exhaust port contained therein and controlled by the reciprocatiner movement oi" said cylinder, a plunger mounted within said hollow stationary piston and connected through the slots thereof with said cylinder, and a connecting rod connecting' the. said plunger with the crank shatt ot the engine.

ln an internal combustion engine.. a traine, a stationary piston mounted on said trame, a cyliruler havingports therein with one oi! said ports advaneed and `with hoth t said ports :ultmnatieally controllml h v the reciprtwatery moveuunt ol' said cylinder, and mounted on said piston, a plunger withigilinuii in said piston, :i wrist pin cooperatively Connecting the seid cylinder and the' seid plunger, and e connecting rod rotatably mounted on said Wrist pin to Connect with the crank shaft of seid engine.

8. ln en .internal combustion engine, a freine, u plurality of slotted stationary `pistons mounted on said frame, e ported two end cylinder slidubly mounted on seid stutionary pistone, plungele operating Within 10 the said pistons cooperatively with the seid. cylinder through said slots, und e connecting rod connecting said plungei with the crank shaft of Suid engine.

ln testimony whereof l elim my signature. 15 

